Luminescent material, application thereof, and organic electroluminescent device containing luminescent material

An independent, general compound technology, applied in the field of organic electroluminescence devices, can solve the problems of low efficiency, regulation, difficult material emission color, etc.

Active Publication Date: 2020-05-15
TSINGHUA UNIV
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the selection of OLED materials, singlet light-emitting fluorescent materials have a long life and low price, but low efficiency; triplet light-emitting phosphorescent materials have high efficiency, but are expensive, and the life of blue light materials has not been solved.
However, due to the peripheral substituents on S 1 The

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Luminescent material, application thereof, and organic electroluminescent device containing luminescent material
  • Luminescent material, application thereof, and organic electroluminescent device containing luminescent material
  • Luminescent material, application thereof, and organic electroluminescent device containing luminescent material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0244] Specifically, the preparation method of the organic electroluminescent device of the present invention includes the following steps:

[0245] 1. The glass plate coated with anode material is ultrasonically treated in a commercial cleaning agent, rinsed in deionized water, degreasing ultrasonically in a mixed solvent of acetone and ethanol, baked in a clean environment until the water is completely removed, and used with ultraviolet Light and ozone cleaning, and bombard the surface with low-energy cation beams;

[0246] 2. Put the above-mentioned glass plate with anode in the vacuum chamber and evacuate to 1×10 -5 ~9×10 -3 Pa, vacuum vapor deposition of hole injection material on the anode layer film to form a hole injection layer, the evaporation rate is 0.1-0.5nm / s;

[0247] 3. Vacuum evaporation of hole transport material on the hole injection layer to form a hole transport layer, the evaporation rate is 0.1-0.5nm / s,

[0248] 4. Vacuum vapor deposition of an electron blocking...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a novel compound, an application thereof, and an organic electroluminescent device containing the compound. The compound has a structure as shown in the following formula, wherein Y1 and Y2 are respectively N or B; X1, X2, X3 and X4 are respectively NR1 or BR2; Ra, Rb, Rc and Rd each independently represent a mono-substituent to maximally allowable substituents; and Ra, Rb, Rc and Rd are independently selected from hydrogen, deuterium, or one of the following substituted or unsubstituted groups: a C1-C36 chain alkyl group; a C3-C36 naphthenic group, a C1-C10 alkoxyl group, halogen, cyano, nitro, hydroxyl, silyl, amino, substituted or unsubstituted C6-C30 aryl amino, substituted or unsubstituted C3-C30 heteroaryl amino, substituted or unsubstituted C6-C30 aryl and substituted or unsubstituted C3-C30 heteroaryl. When the compound is used as a luminescent material in an OLED device, the compound has an excellent device performance and high stability. The inventionalso discloses an organic light-emitting device adopting the compound with the general formula.

Description

Technical field [0001] The present invention relates to the technical field of organic electroluminescence, in particular to a novel organic compound and its application, and an organic electroluminescence device containing the compound. Background technique [0002] Organic Light Emission Diodes (OLED: Organic Light Emission Diodes) are a kind of sandwich-like devices, including positive and negative electrode film layers and organic functional material layers sandwiched between the electrode film layers. Because OLED devices have the advantages of high brightness, fast response, wide viewing angle, simple process, and flexibility, they have attracted much attention in the field of new display technology and new lighting technology. At present, this technology has been widely used in the display panels of new lighting fixtures, smart phones and tablet computers, and will further expand to the application fields of large-size display products such as TVs. It is a new type of disp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07F5/02C07F7/08C09K11/06H01L51/54H01L51/50
CPCC07F5/02C07F7/0812C09K11/06C09K2211/1085C09K2211/1055C09K2211/107H10K85/653H10K85/655H10K85/636H10K85/654H10K85/657H10K85/40H10K85/6572H10K50/11
Inventor 段炼张跃威张东东
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap